Improvement in loom



einer eine @strut mijn.

LUC/IEN GILBERT,

or ooW RUN, onro.

Letters Patent No. 106,809, dated August 30, 1870.

To all whom it may concern:

Be it known that I, LUCIEN M. GILBERT, of Cow Run, in the county of Washington and State of Ohio, have invented certain Improvements in Looms and I do herebydeclare that the following, taken in con nection with the drawing which accompanies and forms part of this specificatiomis a description of my invention sufficient to enable those skilled in the art to practice it.

My improvements relate to an improved construction of the cam-disks and cams which actuate the heddle levers.

Figure 1 is an end 'view'ofa loom with my'improvements applied thereto.

Figure 2 shows a face view of one of the cam-disks or plates, and the cam and endlessgroove, and also an edge view of the same, the heddlelever ,being partly shown in dotted lines.

Figure 3 is an edge view, showing the position of the lever relatively to its cam, and the position of its pin in the groove, and also showing in dotted lilies the positi'ouof the pin when moved laterally with its lever, the notch or opening in the next adjacent disk or plate which permits this lateralmo'vement being also 4'shown at ain each of' the plates in figs 2 and 3. Figures 4 and 5 illustrate, inv perspective and in section, respectively, the adjustable eye for varying the throw off the harness.

In order to permit the introduction and removal of the heddles into and from the space provided foreach one between two adjacent carnplatesfit has heretofore been the practice to make a side cut oroutletin Athe camegroove, so that, ata certain point in its revolution, the pin or. roller on the side of the lever might be slipped out of the groove. lhis is objectionablein asmuch as. thebreak in the continuit-y of the groove had the tendency to permit the pin to be pulled from the groove andthe lever to be damaged and made iuoperatiVe, while the loom .was in operation. And, without such broken groove, a single lever could not be removed, because the space provided between the caln- .plates would .not admit of straining the level laterally to force the pin out of the groove, and so setfree the lever.

Ihe only remedy in such case, either to introduce or remove a lever, was'to nnscrewand loosen the whole group or system of cam-plates.

By my improved construction, as hereinafter deescribed, I am enabled, while grouping together in va compact manner as many levers and their cam-plates as by any other known mode, also to make the carngrooves endless or continuous, that is, without any break or side-cut whatever, and yet to be able with perfect facility at any time to introduce or remove any one of the heddle-levers without any change or de- B, the driving-shaf't, having proper connections, as

shown, with the shaft O, on which are supported and f carried the cam-disks and cams.

Each disk, D D' D", &c., may be integral with its cam E E E", &c., or they may be separately made, and afterward secured to each other.

'The cam-piece is made to stand out in relief from i the face or" the disk, so that its periphery shall bear directly upon the projection, F of the lever in which the pin is secured, while the pin itself enters the grooved space between the edge of the cam and the edge of' the excavation made in the disk.

This mode of construction allows ot' giving to these edges perfect finish, trneness, and smoothness, not readily attainable when a-narrow cani-groove is cut in the face of a disk, for the separate cam can be finished to any degree desired before aixing it to thc disk', and the disk itself 'can have that portion of its face betweenits edge which is to come in Contact with the' pin and its center,` cut away to any distance, to facilitate the properl smoothing and turning of such edge, it being only desirable to leave at the center enough of' the disk for securely attaching toit the cam-piece,

It will thus be seen that, when put together, the inner face ofthe cam-piece is -in the same plane with the outer face ofthe disk, and also that there is a continuity of groove G, which has no break 0r interruptionvin it from' which the pin can accidentally escape. But, in order to provide a means by which the lever maybe removed without moving or loosening any of the disks or cams, I cnt in the disks at the side opposite the most eccentric portion of thc groove, a notch, H, which serves to admit the projection F of that lever which is operated by the cam of the next adjacent disk.

To remove or put to place a lever, it is only ,necessary, therefore, to turn a disk (say: E', fig. 3) until its notch H comes round to and coincides with the projection F of lever I; the pin of such vlever is then free to be pushed into or ont of its appropriate groove, as may be desired.' When in place, the edge of projection F runs on the edge of the cam-piece E.

The notch H need not necessarily be cut, as shown, entirely through the whole thickness of the disk, but may be sunk or cut into lit merely far enough to permit the lever to be shifted for removal.

Instead of' cutting such notch, the disk may have a segment or one side out entirely away, orso much only ot'a disk may be employed as may be found necessary to construct therein the continuous groove; the lever being, in such const ruction, inserted and removed precisely as above described, by shifting the 'projection F intolthe part so out away from the next adjaent long slot adapted to receive the end of the heddle-le-v ver, and large enough to admit of its being shifted to any desired position up or down the same. It is provided with a threaded hole and a set-screw, as seen, whereby it may be adjusted with perfect nicety wherever wanted, and 'securely held to its adjusted position without risk of becoming displaced. l

The cord is permanently tied to the device by means;` of the small hole k, and need never be untied for' the purpose of varying the throw.

By this device I dispense with all need of makinga series of notches in the outer edges of .the lever, and attain a, facility and accuracy of adjustment not attainable by the use of suchnotches, into which the cord itself, or a loop thereon, has been lodged for, by such notches, no adjustment can be had at vany point between the notches, as the oord or loop must rest in one of them, and lin such construction also the point point ot' connection is liable at any time to be aecdentally deranged.

By this device the hold is fixed and positive, and the piece K may be slidden to any desired position. I claim- A loom cam, having a slot or recess in the edge of the disk to permit the removal of an adjacent lever, and a continuous unbroken cam-groove to give motion to its own lever, substantially asshown anddeseribed.

Also, the combination of the lever I and its projection F, and pin, with the recessed disk D, and continuons groove G, as and for the purpose described. LUOIEN M. GILBERT.

Witnesses:'

T. M. ALLEN, WM.. A. BRENAN. 

